Sun Microsystems StorEdge T3+, Installation And Configuration Manual

Page: 60 / 228

38 Sun StorEdge T3+ Array Installation and Configuration Manual • April 2002
Single Host With Two Hubs and Eight Controller
Units Configured as Four Partner Groups
FIGURE 4-7
shows one application host connected through FC-AL cables to two hubs
and to eight Sun StorEdge T3+ arrays, forming four partner groups. This
configuration is the maximum allowed in a 72-inch cabinet. This configuration can
be used for footprint and I/O throughput.
Note – This configuration is a recommended enterprise configuration for RAS
functionality because the controller is not a single point of failure.
Note –
There are no hub port position dependencies when connecting arrays to a
hub. An array can be connected to any available port on the hub.
Each array needs to be assigned a unique target address using the
port set
command. These target addresses can be any number between 1 and 125. At the
factory, the array target addresses are set starting with target address 1 for the
bottom array and continuing to the top array. Use the
port list
command to
verify that all arrays have a unique target address. Refer to the Sun StorEdge T3+
Array Administrator’s Manual for further details.
The following three parameters must be set on the master controller unit, as follows:
■
Multi-path support software:
■
DMP:
sys mp_support rw
■
STMS:
sys mp_support mpxio
■
sys cache auto
■
sys mirror auto
Note –
For information on setting these parameters, refer to the Sun StorEdge T3+
Array Administrator’s Manual.
Host-based multipathing software is required for this configuration.